Police investigating the discovery of a human foot on a footpath have asked women who had their left foot amputated since 2014 to get in touch.
Officers discovered the foot on a public footpath in New Waltham, North East Lincolnshire, in April 2019.
Humberside Police has said that one line of inquiry was that the foot may have been clinical waste from a medical procedure.
The force said forensic examinations have led to the conclusion the foot was that of a woman aged over 16 and around 5ft 2ins tall.
Extensive investigations have been carried out over the last two years into missing people, forensic testing and DNA analysis but no match had been found.
Police said the NHS have provided some information in relation to historical surgeries but this does not include private medical procedures.
Detective Chief Inspector Alan Curtis, senior investigating officer in the case, said: “A team of detectives have been working tirelessly to ascertain the identity of the individual and to determine how the body part came to be on the path.
“One line of our inquiry is that the foot may have been clinical waste from a medical procedure. This line of enquiry cannot be ruled out without a full and thorough investigation.
“Although this must seem a very strange request we are now appealing for any female in the Humberside Police Force area and Lincolnshire that has had a medical procedure to remove her left foot since 2014 to contact us.”
Mr Curtis continued: “If you have had such a medical procedure in the past eight years, whether through the NHS or through private medical services, I would ask you to call us. Your call will be treated with the utmost respect and privacy.
“I encourage anyone that would be in this category of amputees to contact us.”
Anyone with information is asked to contact police on 101, quoting log 85 of April 25 2019.